The strange thing is that I had no difficulties at all with coarser meshes for the exact same geometry.

However, I can still mesh the associated volume (with some highly skewed elements) and write a .msh file. I can read it in Fluent, but the grid check fails: the problem appears to be that I have 6171095 right-handed and 26 left-handed faces. Still, in Fluent the grid contains the correct number of elements. I can initialize, but when I try to iterate Fluent returns:

"Error: divergence detected in AMG solver: pressure correction"

So, I'm pretty sure something is wrong with this face. It appears to cause some troubles, such that I can't iterate in Fluent.

Furthermore, if I decrease the element size at the (distorted grid) face edge, Gambit will mesh the face but won't mesh the associated volume anymore:

"inverted elements (negative VOLUME)"

I really hope somebody can help me out here. Especially since the results on the coarser grids looked so promising.

Thanks!

Update:
I tried TUI: /grid/modify-zones/repair-face-handednes
This returned: "Left-handed faces can't be converted to right-handed faces. All face nodes have the right order, but the mesh probably contains non-convex cells."

-mAx-

February 22, 2010 02:50

I would try to split your face which gives you trouble.
Enforcing the presence of edge(s) on the surface may help and solve your problem.
Already experienced this case